Ultrasensitive, Sustainable, and Selective Electrochemical Hydrazine Detection by ALD-Developed Two-Dimensional WO3

Wei Zihan; Hai Zhenyin; Akbari Mohammad Karbalaei; Hu Jie; Hyde Lachlan; Depuydt Stephen; Verpoort Francis; Zhuiykov Serge

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Ultrasensitive, Sustainable, and Selective Electrochemical Hydrazine Detection by ALD-Developed Two-Dimensional WO3

机译：通过ALD开发的二维WO3超敏感，可持续和选择性电化学肼检测

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Wafer-scale two-dimensional (2D) WO3 films with different thicknesses of 0.78, 1.4, 3.6, and 6.5nm were fabricated on Au-SiO2/Si substrates using an atomic layer deposition technique. Their surface morphologies and chemical components were examined by field-emission scanning electron microscopy, atomic force microscopy and X-ray photoelectron spectroscopy. Cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy were utilized for the analysis of the electrochemical behavior of 2D WO3 films towards hydrazine detection under various conditions. The effect of the thickness of 2D WO3 on the electrochemical performance was also analyzed. Significant improvement in hydrazine sensing capabilities was obtained for monolayer 2D WO3 (0.78 nm), demonstrating a high sensitivity of 1.24 mu A mu M-1 cm(-2), a linear hydrazine concentration detection ranging from 0.2 to 2100 mu M, great long-term stability, excellent selectivity and the lowest limit of detection of 0.015 mu M reported to date, which provide a great potential method for materials fabrication in the development of high-performance hydrazine detection.

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来源
《ChemElectroChem》 |2018年第2期|共7页
作者
Wei Zihan; Hai Zhenyin; Akbari Mohammad Karbalaei; Hu Jie; Hyde Lachlan; Depuydt Stephen; Verpoort Francis; Zhuiykov Serge;
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作者单位

Ghent Univ Global Campus Dept Appl Analyt &

Phys Chem 119 Songdomunhwa Ro Incheon South Korea;

Ghent Univ Global Campus Dept Appl Analyt &

Phys Chem 119 Songdomunhwa Ro Incheon South Korea;

Ghent Univ Global Campus Dept Appl Analyt &

Phys Chem 119 Songdomunhwa Ro Incheon South Korea;

Taiyuan Univ Technol Micro &

Nano Syst Res Ctr Key Lab Adv Transducers &

Intelligent Control Sys Minist Educ Taiyuan 030024 Shanxi Peoples R China;

Swinburne Univ Technol Factory Future Hawthorn Vic Australia;

Ghent Univ Global Campus Dept Appl Analyt &

Phys Chem 119 Songdomunhwa Ro Incheon South Korea;

Ghent Univ Global Campus Dept Appl Analyt &

Phys Chem 119 Songdomunhwa Ro Incheon South Korea;

Ghent Univ Global Campus Dept Appl Analyt &

Phys Chem 119 Songdomunhwa Ro Incheon South Korea;

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原文格式 PDF
正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
关键词
2D WO3; atomic layer deposition; hydrazine; sensing performance;

机译：2D WO3;原子层沉积;肼;感测性能;

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Ultrasensitive, Sustainable, and Selective Electrochemical Hydrazine Detection by ALD-Developed Two-Dimensional WO3

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